1// Copyright (c) 2012 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#ifndef CONTENT_PUBLIC_BROWSER_DOWNLOAD_DESTINATION_OBSERVER_H_ 6#define CONTENT_PUBLIC_BROWSER_DOWNLOAD_DESTINATION_OBSERVER_H_ 7 8#include <string> 9 10#include "content/public/browser/download_interrupt_reasons.h" 11 12namespace content { 13 14// Class that receives asynchronous events from a DownloadDestination about 15// downloading progress and completion. These should report status when the 16// data arrives at its final location; i.e. DestinationUpdate should be 17// called after the destination is finished with whatever operation it 18// is doing on the data described by |bytes_so_far| and DestinationCompleted 19// should only be called once that is true for all data. 20// 21// All methods are invoked on the UI thread. 22// 23// Note that this interface does not deal with cross-thread lifetime issues. 24class DownloadDestinationObserver { 25 public: 26 virtual void DestinationUpdate(int64 bytes_so_far, 27 int64 bytes_per_sec, 28 const std::string& hash_state) = 0; 29 30 virtual void DestinationError(DownloadInterruptReason reason) = 0; 31 32 virtual void DestinationCompleted(const std::string& final_hash) = 0; 33}; 34 35} // namespace content 36 37#endif // CONTENT_PUBLIC_BROWSER_DOWNLOAD_DESTINATION_OBSERVER_H_ 38